Android 集成 NanoHTTPD 服务器

public abstract class NanoHTTPD {
private final static String charset = "UTF-8";
private final static String defContentHeaderCharset = charset;
private final static String responseCharset = charset;
private final static String printWriterCharset = charset;
private final static String decodePercent = charset;
private final static String httpHeadCharset = charset.toLowerCase();

/**
 * Pluggable strategy for asynchronously executing requests.
 */
public interface AsyncRunner {
    void closeAll();
    void closed(ClientHandler clientHandler);
    void exec(ClientHandler code);
}

/**
 * The runnable that will be used for every new client connection.
 */
public class ClientHandler implements Runnable {
    private final InputStream inputStream;
    private final Socket acceptSocket;

    private ClientHandler(InputStream inputStream, Socket acceptSocket) {
        this.inputStream = inputStream;
        this.acceptSocket = acceptSocket;